1.WARNING: You are using pip version 20.1; however, version 20.1.1 is available. You should consider u;
直接运行命令:python -m pip install --upgrade pip;还报错的时候,输入命令:python -m pip install -U pip。
还不行的话可以使用国内的源下载:python -m pip install --upgrade pip -i https://pypi.douban.com/simple
2.Python安装jieba出现的问题:关了重新试好了
网上说输入这句也可以:pip install -i https://pypi.tuna.tsinghua.edu.cn/simple jieba